78869375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1$

素因数の和:621

約数の個数: 40

約数和(自身を含む): 112576464

約数和(自身を除く): 33707089

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 221, 325, 425, 571, 625, 1105, 1625, 2125, 2855, 5525, 7423, 8125, 9707, 10625, 14275, 27625, 37115, 48535, 71375, 126191, 138125, 185575, 242675, 356875, 630955, 927875, 1213375, 3154775, 4639375, 6066875, 15773875, 78869375]

約数ペア:

[(1, 78869375), (5, 15773875), (13, 6066875), (17, 4639375), (25, 3154775), (65, 1213375), (85, 927875), (125, 630955), (221, 356875), (325, 242675), (425, 185575), (571, 138125), (625, 126191), (1105, 71375), (1625, 48535), (2125, 37115), (2855, 27625), (5525, 14275), (7423, 10625), (8125, 9707)]